en.Wedoany.com Reported - Texas Instruments has released a new battery monitoring chip that can provide early warning of battery failures and reduce the number of internal components in battery packs. The chip, named BQ79826Z-Q1, is primarily designed for electric vehicles and energy storage systems. Texas Instruments claims this device is the industry's highest-cell-count battery monitor with an integrated electrochemical impedance spectroscopy (EIS) engine.

Each BQ79826Z-Q1 device supports up to 26 battery cells, offering 44% more monitoring channels than the previous generation solution. The company states that the chip supports 8 more battery cells than competing products, helping to reduce system complexity, minimize circuit board space requirements, and control bill of materials costs. This chip addresses the demands of automakers and energy storage developers for improved battery safety, extended lifespan, and reduced costs as they scale up production of electric vehicles and large-scale energy storage systems.

EIS technology monitors the electrochemical behavior of batteries in real time, helping to detect conditions that could lead to failures such as thermal runaway. Wenjia Liu, Vice President and General Manager of Texas Instruments' Battery Management Systems division, stated that this technology helps to "illuminate" the inside of battery cells and provides chemical state data that software can use to make real-time decisions regarding battery safety and performance. The company claims that by monitoring internal changes within battery cells, this technology can identify faults earlier than traditional methods.

This monitor provides voltage accuracy of less than 2 mV over a temperature range of -40°F to 257°F. EIS measurement speed is 5 times faster than the previous generation, helping to improve state-of-charge calculations and battery health monitoring. The chip meets Automotive Safety Integrity Level D requirements and the ISO 26262 functional safety standard. The BQ79826Z-Q1 can also be used in conjunction with Texas Instruments' BQ79881-Q1 battery pack monitor and communication bridge, allowing developers to use the same architecture across different battery chemistries, module sizes, and mechanical designs. The technology was demonstrated at the 2026 Power Conversion, Intelligent Motion Expo and Conference (PCIM 2026) held in Nuremberg, Germany.

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